Diagram 64
20
Program 68:
Function according to diagram.
The three-way valve
A3
receives power when filling tank
TK2
.
Sensors
Outputs
T1…. Collector 1
A1…. Solar pump collector panel 1
T2…. Collector 2
A2…. Solar pump collector panel 2
T3…. Tank 1 bottom
A3…. Three-way valve (feeding tanks)
T4…. Tank 2 bottom
A4…. Feed pump
T5…. Tank 1 top
T6…. Tank 2 top
A1 = T1 > (T3 + diff1) & T3 < max1
A1 & A3 = T1 > (T4 + diff2) & T4 < max2
A2 = T2 > (T3 + diff1) & T3 < max1
A2 & A3 = T2 > (T4 + diff2) & T4 < max2
A4
=
T6
>
(T5
+
diff4) & T6 > min2 & T5 < max4
All Pr1:
If the difference between collector sensors
T1
and
T2
exceeds the differ-
ence
diff3
, the colder collector is switched off. This prevents heat from being lost in the cold-
er collector when temperatures are mixed.
T1 T2 T6
min2
diff1 diff2 diff2 diff4
A1 A1,3 A2,3 A4
diff1
A2
T3 T4 T5
max1 max2 max4
Required settings:
diff1
…coll. T1 – TK1 T3
A1
coll. T2 – TK1 T3
A2
diff2
…coll. T1 – TK2 T4
A1,3
coll. T2 – TK2 T4
A2,3
diff3
…see all pr1
diff4
…TK2 T6 – TK1 T5
A4
min2
…switch-on temp. T6
A4
max1
…limit TK1 T3
A1,2
max2
…limit TK2 T4
A1,2,3
max4
…limit TK1 T5
A4
Additional
: Priority
Vorr
:
(typical: A11, A22, A31, A42)
TK 2
TK 1